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Electrochemical and Photoelectrochemical Investigation of Water Oxidation with Hematite Electrodes

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Figure

Figure 1.  Steady state J-V curve of a hematite electrode in contact with a H 2 O (red curve) and  [Fe(CN) 6 ] 3-/4-  (orange curve) electrolyte
Figure 2.  Nyquist plots for IS data measured under 1 sun illumination for H 2 O (red circles) and  [Fe(CN) 6 ] 3-/4-  (orange triangles) electrolytes at (a) 0.70 V vs
Figure 3. a)  Full equivalent circuit used to conceptualize hematite-liquid junctions
Figure 4.  Equivalent circuit parameters obtained from fitting IS data for a hematite electrode in  contact with H 2 O (a and b) and [Fe(CN) 6 ] 3-/4-  (c) electrolytes under 0.1 sun (orange triangles),  0.33 sun (yellow squares) and 1 sun (green diamonds)
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